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Broken Top volcano

stratovolcano 663 m / 2,175 ft
Oregon, USA (mainland exept Alaska), 44.08°N / -121.7°W
Current status: (probably) extinct (0 out of 5)
Broken Top volcano books
Typical eruption style: Explosive
Broken Top volcano eruptions: unknown, but probably none during the past 10,000 years
TimeMag. / DepthDistanceLocation
Sun, 31 Dec
Sun, 31 Dec 20:55 UTCM 0.1 / 0.8 km2 km- 23km ESE of Three Rivers, Oregon
Thu, 14 Dec
Thu, 14 Dec 18:41 UTCM 1.4 / 2.7 km3 km- 23km ESE of Three Rivers, Oregon
Thu, 14 Dec 18:41 UTCM 2.1 / 1 km3 kmNEWBERRY CALDERA AREA, OREGON
Wed, 13 Dec
Wed, 13 Dec 17:12 UTCM 0.3 / 1.5 km7 km- 18km ESE of Three Rivers, Oregon
Tue, 12 Dec
Tue, 12 Dec 18:54 UTCM 0.6 / 1.7 km1 km- 22km ESE of Three Rivers, Oregon
View all recent quakes
Broken Top in the Three Sisters Wilderness, Oregon, is, as the name suggests, the heavily eroded top of a probably extinct stratovolcano.

Background:

The earliest products were basaltic lava flows forming a basal shield. Later stage eruptions built a steeper cone of more silica rich lava flows and pyroclastic deposits.

Broken Top Photos:




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